Swift-XRT Survey of Fermi Unassociated Sources

These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.
Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

4FGL J2142.5-2029

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2142.5-2029 Swift-XRT detections in the field for 4FGL J2142.5-2029

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 21 42 07.09 -20 30 25.44 5.17 (4.0 ± 1.2) x 10-3 26 3.433 3.251
2 21 43 15.07 -20 25 36.79 5.64 (3.5 ± 1.1) x 10-3 15 3.275 3.080

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 21 42 50.95 -20 22 06.50 6.12 (2.8 ± 1.0) x 10-3 14 2.626 2.778
2 21 42 52.84 -20 43 42.21 6.52 (2.4 ± 0.9) x 10-3 9 2.487 2.714
3 21 42 53.50 -20 39 59.05 5.59 (3.0 ± 1.1) x 10-3 15 2.761 2.685
4 21 42 15.29 -20 23 17.79 5.24 (3.0 ± 1.1) x 10-3 24 2.804 2.636
5 21 42 39.90 -20 28 29.28 5.70 (3.1 ± 1.2) x 10-3 22 2.520 2.579
6 21 42 21.12 -20 41 50.18 6.78 (2.1 ± 0.9) x 10-3 10 2.346 2.477
7 21 42 27.67 -20 34 31.79 5.24 (2.4 ± 1.0) x 10-3 21 2.532 2.320
8 21 42 43.25 -20 28 00.93 5.53 (2.3 ± 1.1) x 10-3 25 2.547 2.159

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2142.5-2029 Swift-XRT image with known radio, optical and UV sources for 4FGL J2142.5-2029

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J214239.9-202829 21 42 40.10 -20 28 29.28 1.90 XMM-NEWTON
XMMSL2 J214239.9-202829 21 42 40.10 -20 28 29.28 1.90 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 840801 21 42 33.91 -20 30 23.04 0.60 PGC2003
2 NVSS J214240-202822 21 42 40.10 -20 28 23.16 1.97 NVSS
3 PGC 841365 21 42 26.81 -20 27 57.96 2.52 PGC2003
4 WDS J21430-2025 21 43 00.00 -20 25 00.12 7.71 WDS
5 PGC 840425 21 42 02.11 -20 31 50.88 7.79 PGC2003
PPM 272854 21 42 59.57 -20 24 42.84 7.82 PPM
BD-21 6076 21 42 59.59 -20 24 42.84 7.82 ACRS
SAO 190574 21 42 59.54 -20 24 40.68 7.84 SAO
6 PGC 842929 21 42 25.30 -20 21 06.84 8.92 PGC2003
WISH B2139.3-2034 21 42 10.20 -20 20 31.92 10.83 WISH
7 NVSS J214210-202025 21 42 10.10 -20 20 25.08 10.94 NVSS
TGSSADR J214209.9-202020 21 42 10.01 -20 20 21.12 11.01 GMRTAS150M
8 PPM 736905 21 42 30.29 -20 40 50.88 11.10 PPM
9 GLEAM J214207-202009 21 42 07.30 -20 20 09.96 11.51 GLEAMEGCAT
10 PGC 842454 21 41 53.30 -20 23 17.16 11.58 PGC2003
11 PGC 135275 21 42 52.01 -20 40 41.88 11.68 PGC2003
12 NVSS J214144-202625 21 41 44.81 -20 26 26.16 12.05 NVSS
TGSSADR J214144.5-202624 21 41 44.50 -20 26 24.00 12.11 GMRTAS150M
13 NVSS J214203-201957 21 42 04.01 -20 19 57.00 12.12 NVSS
TGSSADR J214204.1-201951 21 42 04.20 -20 19 51.96 12.17 GMRTAS150M
WISH B2138.9-2039 21 41 44.30 -20 26 12.12 12.22 WISH
GLEAM J214143-202627 21 41 43.70 -20 26 26.88 12.28 GLEAMEGCAT
14 WISH B2139.2-2032 21 42 04.01 -20 19 17.04 12.67 WISH
WISH B2140.3-2053 21 43 10.20 -20 39 21.96 12.76 WISH
15 NVSS J214143-202502 21 41 43.20 -20 25 01.92 12.87 NVSS
16 NVSS J214310-203932 21 43 10.30 -20 39 32.04 12.90 NVSS
GLEAM J214310-203934 21 43 10.80 -20 39 34.92 13.00 GLEAMEGCAT
17 PGC 843365 21 42 00.70 -20 19 09.12 13.22 PGC2003
18 NVSS J214318-203828 21 43 18.10 -20 38 29.04 13.46 NVSS
19 NVSS J214151-203919 21 41 51.91 -20 39 20.16 13.75 NVSS
20 ABELL2364 21 41 59.35 -20 17 59.64 14.35 ABELL
GLEAM J214155-201842 21 41 55.10 -20 18 42.84 14.37 GLEAMEGCAT
21 NVSS J214154-201836 21 41 54.60 -20 18 37.08 14.53 NVSS
TGSSADR J214154.4-201834 21 41 54.50 -20 18 33.84 14.58 GMRTAS150M
WISH B2139.0-2030B 21 41 54.41 -20 18 34.92 14.58 WISH

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